Answer:
Angles are 3x, 4x =

Angles from lowest to highest:

Explanation:
Given: Two angles of a quadrilateral measure 140° and 80°. The other two angles are in a ratio of 3:4.
To find: value of x, measures of those two angles and
Also, to list the measures of the other two angles from lowest to highest.
Solution:
According to angle sum property of a quadrilateral, sum of angles of a quadrilateral is 180°.
Let the two angles be 3x and 4x

So, angles are as follows:

Angles from lowest to highest:
